Penlock: Private Journal

Penlock is a beautiful journaling app built on one principle: your words never leave your device.

No cloud sync. No accounts. No servers. No subscriptions. Everything you write is stored locally on your phone — private by design, not as an afterthought.

WRITE FREELY
Create journal entries, attach photos, set your mood, and organize with custom colored tags. Whether it's a quick daily reflection or a detailed travel log, Penlock gives you everything you need — and nothing you don't.

STAY PRIVATE
Lock your journal with your fingerprint, face unlock, or device PIN. All data lives in the app's private storage on your device — never uploaded, never shared, never seen by anyone but you. Cloud backup is turned off, and there are no analytics and no ads.

BUILD A HABIT
Track your writing streak and keep the momentum going. Use built-in writing starters — gratitude, daily reflection, goal setting, weekly review, travel log — or create your own custom prompts to jump-start your writing.

DISCOVER YOUR PAST
The Timeline view lets you navigate entries by date at a glance. Memories shows you what you wrote on this day in previous years. Full-text search puts every thought you've ever written at your fingertips.

ONE PRICE. YOURS FOREVER.
Penlock is a one-time purchase — no subscription, no recurring charges, all future updates included. Try it free with up to 10 entries, then unlock everything for life.

FEATURES
· Unlimited journal entries (after one-time unlock)
· Custom tags with 10 color options
· Photo attachments — up to 10 per entry
· Mood tracking with 12 emoji moods
· Writing starters and custom templates
· Writing streak tracker
· On This Day memories
· Timeline calendar view
· Full-text search
· Markdown export
· Fingerprint, face unlock, or PIN protection
· Daily writing reminders
· No cloud, no accounts, no tracking
· All future updates included

PRIVACY
Penlock does not collect any personal data. Your journal entries, photos, and preferences never leave your device. The only third-party services are RevenueCat for purchase validation and anonymous crash reports that help fix bugs — neither ever receives any of your journal content. Full privacy policy at sugoigroup.dev/penlock/privacy.